JPH0147691B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heating device having a refrigeration cycle.

As shown in FIGS. 1 and 2, the conventional heating system has an indoor unit 3 equipped with an indoor heat exchanger 1 and an indoor blower 2 installed above the wall 5 of a room 4, and a compressor 7 and an indoor unit 3 installed indoors. The heat exchanger 8 and the throttle resistor 9 are connected in sequence to an outdoor unit 11 equipped with an outdoor blower 10 that blows air to the outdoor heat exchanger 8 via a pipe body 12.

The conventional heating device is configured as described above, and heating is performed by operating the compressor 7 to compress the refrigerant through the compressor 7, indoor heat exchanger 1, throttling resistor 9, and outdoor heat exchanger 8. The indoor heat exchanger 1 is operated as a condenser, the outdoor heat exchanger 8 is operated as an evaporator, and the indoor blower 2 is operated to heat the room. However, by heating in this way, the temperature distribution in the room is as shown in Figure 3, where the temperature is higher near the ceiling and lower near the floor. There was the discomfort of hot feet and cold feet, and there was also the disadvantage that heat was not used effectively and there was a lot of heat loss.

This invention was made in view of the above-mentioned drawbacks, and provides a heating system that is comfortable and has little heat loss by utilizing the heat in the warmer upper part of the room to cool the upper part of the room and heat the lower part of the room. The purpose is to

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 4 to 6. Reference numerals 3 to 12 indicate the same or equivalent parts as in the conventional example described above, and 13 is an outer casing of the indoor unit 3, each of which has an independent structure. Air passages 14a and 14b are installed inside, and one air passage 14a has a heated room 4.
A first heat exchanger 15 that acts as an evaporator during a heat utilization operation (hereinafter referred to as heat utilization operation) in which the lower part of the chamber 4 is heated using the temperature of the upper portion, and air passing through the first heat exchanger. A blower 16 for blowing air above the chamber 4 is provided, and a second heat exchanger 17 that acts as a condenser during heat utilization operation is provided in the other air passage 14b, and the air passing through the second heat exchanger is sent to the chamber 4. The first heat exchanger 15 and the second heat exchanger 17 are connected to the throttle resistor 19.
and a first electromagnetic valve 20 arranged in parallel therewith. 21 is a bypass circuit having a second electromagnetic valve 22 installed in parallel with the outdoor heat exchanger 8 and the throttle resistor 9 so as to bypass the series circuit; 23 is a temperature sensor provided in the upper part of the chamber 4; The element controls the solenoid valves 20 and 22 via a control circuit 24.

The present invention is configured as described above, and when the temperature inside the room 4 is low and heating is to be performed (hereinafter referred to as heating and heating), this is detected by the temperature detection element 23 and the solenoid valve 20 is opened. occlude. As a result, the refrigerant passes through the compressor 7, the second heat exchanger 17, the solenoid valve 20, the first heat exchanger 15, the throttling resistor 9, and the outdoor heat exchanger 8 in order, as shown by the solid line, and enters the compressor 7. return. At this time, the first and second heat exchangers 1
5 and 17 act as condensers, and the outdoor heat exchanger 8 acts as an evaporator, and the room is heated and heated by operating the blowers 16 and 18, but the indoor temperature distribution is the same as in the conventional case, as shown in Figure 3. . When the temperature in the upper part of the room rises to a predetermined temperature, the temperature detection element 23 detects this and switches to heat utilization operation. That is, when the temperature in the upper part of the room reaches a predetermined temperature, the temperature detection element 23 closes the solenoid valve 20 and opens the solenoid valve 22. As a result, the refrigerant flows as shown by the broken line, the throttling resistance 19 acts, and the outdoor heat exchanger 8 and the throttling resistance section 9 cease to act, so the second heat exchanger 17 acts as a condenser, and the first heat exchanger 17 acts as a condenser. Exchanger 15 acts as an evaporator. In addition, the blower 16 and the blower 18 are operated, and the air blown by the blower 16 is directed upward into the room 2, and the air blown by the blower 18 is directed downward into the room 2, so that the temperature distribution in the room is almost uniform as shown in FIG. , and the amount of heat from the temperature difference (shaded area in the diagram) compared to the conventional one is used effectively.
There is no discomfort in the living space, and it also saves energy.

In the above embodiment, the first and second heat exchangers are provided with blowers 16 and 18, respectively, but the same effect can be obtained even if only the air passage is formed independently using one blower.

Furthermore, the bypass circuit 21 bypasses the outdoor heat exchanger 8 and the throttle resistor 9;
A similar effect can be obtained by bypassing only the

As explained above, the present invention connects a compressor, an outdoor heat exchanger, a throttle resistor, and an indoor heat exchanger in sequence, and forms the indoor heat exchanger from a first heat exchanger and a second heat exchanger. , by providing these through a parallel circuit consisting of a throttle resistor and a solenoid valve, and by providing a bypass circuit having a solenoid valve in parallel with the throttle resistor, the heating and heating at the initial stage of heating and the heating caused by this heating and heating can be reduced. It is possible to perform heat utilization operation that utilizes the heat in the upper part of the room, and the temperature of the ceiling and floor areas can be made almost uniform at all times, which has the effect of providing comfortable heating with little heat loss.

[Brief explanation of drawings]

Fig. 1 is an installation diagram showing a conventional example, Fig. 2 is a refrigerant circuit diagram thereof, Fig. 3 is an indoor temperature distribution diagram thereof, Fig. 4 is an installation diagram showing an embodiment of the present invention, and Fig. 5 6 is a perspective view of the indoor unit, FIG. 6 is a refrigerant circuit diagram, and FIG. 7 is a temperature distribution diagram during heating according to the present invention. In addition, the same reference numerals in each figure indicate the same or equivalent parts, 3 is an indoor unit, 4 is a chamber, 7 is a compressor, 8 is an outdoor heat exchanger, 9 is a throttle resistance part, 15 is a first heat exchanger, 17 is the second heat exchanger, 19 is the throttle resistor, 2
0 and 22 are electromagnetic valves, and 21 is a bypass circuit.

Claims (1)

[Claims] 1. A refrigerant pipe line which sequentially connects a compressor, a second indoor heat exchanger, a throttle resistor, a first indoor heat exchanger, a throttle resistor, and an outdoor heat exchanger; An indoor unit housing a second indoor heat exchanger, and a blower that sends air passing through the first indoor heat exchanger to the upper part of the heating room and blows air passing through the second indoor heat exchanger to the lower part of the heating room. and,
A first solenoid valve provided in a bypass path of the throttle resistor and opened during normal heating operation and closed during heat utilization operation, and a first solenoid valve provided in a bypass path between the throttle resistor or the throttle resistor and the outdoor heat exchanger. A heating device comprising a second solenoid valve that is closed during normal heating operation and opened during heat utilization operation.